Interface NodeDragState

interface NodeDragState {
    currentNodePosition: Point | null;
    currentScreenPoint: ScreenPoint | null;
    delta: Point;
    draggingNodeId: GraphId | null;
    pointerId: DragPointerId | null;
    startNodePosition: Point | null;
    startScreenPoint: ScreenPoint | null;
    viewportZoom: number | null;
}